TAILIEUCHUNG - Lecture Operating system concepts (Fifth edition): Module 12 - Avi Silberschatz, Peter Galvin

Module 12 - I/O systems. The role of the operating system in computer I/O is to manage and control I/O operations and I/O devices. Although related topics appear in other chapters, here we bring together the pieces to paint a complete picture. In this chapter we describe I/O Structure, Devices, Device Drivers, Caching, and Terminal I/O. | Module 12: I/O Systems I/O hardwared Application I/O Interface Kernel I/O Subsystem Transforming I/O Requests to Hardware Operations Performance Operating System Concepts I/O Hardware Incredible variety of I/O devices Common concepts Port Bus (daisy chain or shared direct access) Controller (host adapter) I/O instructions control devices Devices have addresses, used by Direct I/O instructions Memory-mapped I/O Operating System Concepts Polling Determines state of device command-ready busy error Busy-wait cycle to wait for I/O from device Operating System Concepts Interrupts CPU Interrupt request line triggered by I/O device Interrupt handler receives interrupts Maskable to ignore or delay some interrupts Interrupt vector to dispatch interrupt to correct handler Based on priority Some unmaskable Interrupt mechanism also used for exceptions Operating System Concepts Interrupt-drive I/O Cycle Operating System Concepts Direct Memory Access Used to avoid programmed I/O for large data .

• Hệ điều hành
• Operating system concepts
• Lecture Operating system concepts
• Operating system
• Hệ điều hành
• Computer system organization
• I O systems
• Operating system services
• Operating system structures
• Operating system design
• Operating system structure
• Operating System Debugging
• Operating System Generation
• Types of System Calls
• Computer system structures
• File system interface
• File system implementation
• Computer system architecture
• The Linux system